these are great ideas and they can all be improved. The improvement is to design the system to insure proper disinfection. In some cases the UV can be harmful or not effective if it is not designed to the application correctly. We are working on an LED system right now which will work. Much work is needed and input from the medical community to understand the objectives and needs to insure proper manufacturing
Too much UV is a problem, however if you use the correct light waveform this can be done. The problem is the LED's on the market are not correct. This design can be adjusted to a box with the correct light which can disinfect skin. We can do this.